AV1 Still Image File Format (AVIF)

AOMedia > AV1 > AVIF

公式

• https://aomediacodec.github.io/av1-avif/
  • https://github.com/AOMediaCodec/av1-avif
  • https://github.com/AOMediaCodec/av1-avif/wiki

• https://github.com/AOMediaCodec/libavif

要素

• AV1 (動画エンコード。AVIF はこれの I フレームを用いる)
• ISOBMFF (コンテナ形式。HEIF とほぼ殆ど同じ。av1C が異なる。HEIF は hvcC)
  • AV1/Config av1C

解説

• AV1 Image File Format (AVIF)
  • https://people.xiph.org/~negge/AVIF2018.pdf

競合

HEIF

• HEIFとAVIF：画像と写真のフォーマットと違い
  • https://itigic.com/ja/heif-and-avif-image-photography-formats-differences/

WebP

• Comparing AVIF vs WebP file sizes at the same DSSIM
  • https://www.ctrl.blog/entry/webp-avif-comparison.html

表示

• https://cconcolato.github.io/wasm-av1/

テスト画像

• AVIF test file collection
  • https://github.com/AOMediaCodec/av1-avif/tree/master/testFiles
    • https://github.com/AOMediaCodec/av1-avif/tree/master/testFiles/Microsoft

• Netflix - AV1 / Chimera / AVIF
  • http://download.opencontent.netflix.com/?prefix=AV1/Chimera/AVIF/

ソフトウエア

OS

Android

• Android 12 Will Support AVIF Photos
  • https://petapixel.com/2021/02/20/android-12-will-support-avif-photos/
    • https://android-developers.googleblog.com/2021/02/android-12-dp1.html

ブラウザ

• https://caniuse.com/avif

Chrome

• https://chromium-review.googlesource.com/c/chromium/src/+/2101317

  Add support for decoding the AV1 image format (AVIF).

• https://developer.android.com/about/versions/12/features

  Android 12 introduces support for images that use the AV1 Image File Format (AVIF).

Mozilla

• https://bugzilla.mozilla.org/show_bug.cgi?id=1625363

  AVIF (AV1 Image File Format): experimental support

Safari

• https://trac.webkit.org/wiki/WebKitGoalsfor2020 (WebKit: no support for AV1 and AVIF seems planned any time soon)

ライブラリ

• libheif
• https://github.com/AOMediaCodec/libavif

• Port of the AV1 Video codec to WebAssembly
  • https://github.com/GoogleChromeLabs/wasm-av1

• https://www.microsoft.com/en-us/p/av1-video-extension-beta/9mvzqvxjbq9v?activetab=pivot:overviewtab

Rust

• cavif

JavaScript

• AVIF polyfill for the browser
  • https://github.com/Kagami/avif.js

Golang

• https://github.com/Kagami/go-avif

その他

• AVIFを試す
  • https://wave.hatenablog.com/entry/2019/09/07/080800

    % ffmpeg -r 1 -i INFILE -c:v libaom-av1 -g 1 -frames 1 -crf CRFVALUE -b:v 0 -an -strict experimental -y OUTFILE.mp4

    % mp4box -add-image OUTFILE.mp4:time=0 -brand avif OUTFILE.avif

• Photo format from Google and Mozilla could leave JPEG in the dust
  • https://www.cnet.com/news/google-mozilla-av1-photo-format-could-outdo-aging-jpeg/

• 次世代動画コーデック「AV1」の圧縮技術を利用する次世代画像フォーマット「AVIF」
  • https://gigazine.net/news/20180411-avif-draft/

• AVIF for Next-Generation Image Coding
  • https://netflixtechblog.com/avif-for-next-generation-image-coding-b1d75675fe4

• http://www.dma.ufg.ac.at/assets/25279/vh1_S.pdf

• How to Use AVIF: The New Next-Gen Image Compression Format
  • https://reachlightspeed.com/blog/using-the-new-high-performance-avif-image-format-on-the-web-today/

• AVIF 入りの ImageMagick をビルドする
  • https://zenn.dev/tan_y/articles/a8891b9cd4ba0b

• Cloudflare adding support for AVIF image format
  • https://www.reddit.com/r/AV1/comments/j4f2ea/cloudflare_adding_support_for_avif_image_format/

関連

• ISOBMFF - MiAF
• CMAF
• HEIF